Add fibonacci app

app.py

@@ -7,16 +7,18 @@ from tools.final_answer import FinalAnswerTool
 
 from Gradio_UI import GradioUI
 
-# Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return type
-    #Keep this format for the description / args / args description but feel free to modify the tool
-    """A tool that does nothing yet 
+def fibonacci(arg1:str) -> str:
+    """A tool that get a position n, and tell you the Fibonacci number at that position in the sequence. 
     Args:
-        arg1: the first argument
-        arg2: the second argument
+        arg1: the position
     """
-    return "What magic will you build ?"
+    number = int(n)
+    a, b = 0, 1
+    for _ in range(number):
+        a, b = b, a + b
+    return str(a)
+    
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
@@ -55,7 +57,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer, get_current_time_in_timezone], ## add your tools here (don't remove final answer)
+    tools=[final_answer, get_current_time_in_timezone, fibonacci], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,